package com.turtle.learning.auth.filter;

import com.turtle.learning.auth.dto.LoginUserInfo;
import com.turtle.learning.auth.utils.TokenOperator;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * token过滤器 验证token有效性
 *
 * @author turtle
 * date: 2020-05-06
 */
@Component
@Slf4j
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
    @Autowired
    private TokenOperator tokenOperator;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
        throws ServletException, IOException {
        LoginUserInfo loginUserInfo = tokenOperator.getUserInfo(request);
        if (loginUserInfo != null && SecurityContextHolder.getContext().getAuthentication() == null) {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUserInfo, null, loginUserInfo.getAuthorities());
            authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
            SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        }
        chain.doFilter(request, response);
    }
}
